"is allergic to" is a phrase used to describe a condition where an individual's immune system negatively responds to a particular substance, known as an allergen. When someone is allergic to something, it means that exposure to that particular substance triggers an abnormal immune response, resulting in various symptoms or reactions.
Allergens can be found in a wide array of substances, including foods, medications, airborne particles, insect bites or stings, chemicals, and more. Common examples of allergens include peanuts, shellfish, pollen, pet dander, dust mites, certain medications, latex, and various environmental factors.
When someone with allergies is exposed to an allergen, their immune system perceives it as a threat and releases certain chemicals, such as histamine, in an attempt to defend the body. These chemicals cause various allergic reactions, ranging from mild to severe. Symptoms of an allergic reaction may include sneezing, itching, watery eyes, congestion, coughing, hives, swelling, rashes, difficulty breathing, gastrointestinal issues, or, in severe cases, anaphylaxis, a potentially life-threatening reaction.
If someone is aware that they are allergic to a certain substance, they may take precautionary measures to avoid exposure, such as avoiding specific foods, taking prescribed medications, or using allergen-impermeable barriers. In case of a severe allergy, individuals commonly carry an epinephrine auto-injector, commonly known as an EpiPen, for emergency treatment in case of an anaphylactic reaction. It is important for someone with allergies to consult with a medical professional to identify and manage their allergies effectively.
